Individual provider · Type 1 NPI

Cassy Jean Williams, APRN

Nurse Practitioner · Boston, MA

NPI number 1356617815 Active

Practice location

68 Harrison Ave Ste 600
Boston, MA 02111-1995

Call (657) 500-0634 Map

Fax (844) 705-0129

Mailing address

13885 Saint John Rd
Rineyville, KY 40162-9719

Other practice locations

2415 E Camelback Rd Ste 700, Phoenix, AZ 85016-4245 · (480) 690-9522
506 2nd Ave Ste 1400, Seattle, WA 98104-2329 · (857) 289-9374
1580 N Logan St Fl 6, Denver, CO 80203-1939 · (720) 807-0053
2021 Guadalupe St Ste 260, Austin, TX 78705-5654 · (346) 214-1790
2033 Gateway Pl Fl 5, San Jose, CA 95110-3709 · (857) 289-9374
4145 SW Watson Ave Ste 350, Beaverton, OR 97005-2191 · (857) 289-9374

Specialties and licenses

Taxonomy	Code	License
Acute Care Nurse Practitioner	363LA2100X	3013217 (KY)
Nurse Practitioner Primary	363L00000X	3013217 (KY)

Nurse Practitioner: (1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance wit…

3 other providers at this address

Other nurse practitioner providers in Boston

See all in Boston →

About NPI 1356617815

Cassy Jean Williams, APRN's National Provider Identifier is 1356617815, issued on Mar 29, 2012. The primary taxonomy on file is Nurse Practitioner (363L00000X), and the practice location is in Boston, MA. The record was last updated on Aug 12, 2026.